1 files changed, 119 insertions, 0 deletions
diff --git a/tools/xenstore/fake_libxc.c b/tools/xenstore/fake_libxc.c
new file mode 100644
index 0000000000..decfb4001d
--- /dev/null
+++ b/tools/xenstore/fake_libxc.c
@@ -0,0 +1,119 @@
+/* 
+    Fake libxc which doesn't require hypervisor but talks to xs_test.
+    Copyright (C) 2005 Rusty Russell IBM Corporation
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <sys/mman.h>
+#include <unistd.h>
+#include <assert.h>
+#include <signal.h>
+#include "utils.h"
+#include "xenstored_core.h"
+#include "xenstored_domain.h"
+#include "xenstored_test.h"
+
+static int sigfd;
+static int xs_test_pid;
+static u16 port;
+
+/* The event channel maps to a signal, shared page to an mmapped file. */
+int xc_evtchn_send(int xc_handle __attribute__((unused)), int local_port)
+{
+	assert(local_port == port);
+	if (kill(xs_test_pid, SIGUSR2) != 0)
+		barf_perror("fake event channel failed");
+	return 0;
+}
+
+void *xc_map_foreign_range(int xc_handle, u32 dom __attribute__((unused)),
+			   int size, int prot,
+			   unsigned long mfn __attribute__((unused)))
+{
+	void *ret;
+
+	ret = mmap(NULL, size, prot, MAP_SHARED, xc_handle, 0);
+	if (ret == MAP_FAILED)
+		return NULL;
+
+	/* xs_test tells us pid and port by putting it in buffer, we reply. */
+	xs_test_pid = *(int *)(ret + 32);
+	port = *(int *)(ret + 36);
+	*(int *)(ret + 32) = getpid();
+	return ret;
+}
+
+int xc_interface_open(void)
+{
+	int fd;
+	char page[getpagesize()];
+
+	fd = open("/tmp/xcmap", O_RDWR|O_CREAT|O_TRUNC, 0600);
+	if (fd < 0)
+		return fd;
+
+	memset(page, 0, sizeof(page));
+	if (!write_all(fd, page, sizeof(page)))
+		barf_perror("Failed to write /tmp/xcmap page");
+	
+	return fd;
+}
+
+int xc_interface_close(int xc_handle)
+{
+	close(xc_handle);
+	return 0;
+}
+
+static void send_to_fd(int signo __attribute__((unused)))
+{
+	int saved_errno = errno;
+	write(sigfd, &port, sizeof(port));
+	errno = saved_errno;
+}
+
+void fake_block_events(void)
+{
+	signal(SIGUSR2, SIG_IGN);
+}
+
+void fake_ack_event(void)
+{
+	signal(SIGUSR2, send_to_fd);
+}
+
+int fake_open_eventchn(void)
+{
+	int fds[2];
+
+	if (pipe(fds) != 0)
+		return -1;
+
+	if (signal(SIGUSR2, send_to_fd) == SIG_ERR) {
+		int saved_errno = errno;
+		close(fds[0]);
+		close(fds[1]);
+		errno = saved_errno;
+		return -1;
+	}
+	sigfd = fds[1];
+	return fds[0];
+}